Combustible Dust Testing

Laboratory testing to quantify dust explosion and reactivity hazards

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Gas and Vapor

Laboratory testing to quantify explosion hazards for vapor and gas mixtures

Classification of hazardous materials subject to shipping and storage regulations
Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen
Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Thermal Stability

Safe storage or processing requires an understanding of the possible hazards associated with sensitivity to variations in temperature

Adiabatic Calorimetry
Data demonstrate the consequences of process upsets, such as failed equipment or improper procedures, and guide mitigation strategies including Emergency Relief System (ERS) design
Reaction Calorimetry
Data yield heat and gas removal requirements to control the desired process chemistry
Battery Safety

Testing to support safe design of batteries and electrical power backup facilities particularly to satisfy UL9540a ed.4

Safety Data Sheets

Develop critical safety data for inclusion in SDS documents

Cable Testing
Evaluate electrical cables to demonstrate reliability and identify defects or degradation
Equipment Qualification (EQ)
Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions
Water Hammer
Analysis and testing to identify and prevent unwanted hydraulic pressure transients in process piping
Acoustic Vibration
Identify and eliminate potential sources of unwanted vibration in piping and structural systems
Gas & Air Intrusion
Analysis and testing to identify and prevent intrusion of gas or air in piping systems
ISO/IEC 17025:2017

Fauske & Associates fulfills the requirements of ISO/IEC 17025:2017 in the field of Testing

ISO 9001:2015
Fauske & Associates fulfills the requirements of ISO 9001:2015
Dust Hazards Analysis
Evaluate your process to identify combustible dust hazards and perform dust explosion testing
On-Site Risk Management
On-site safety studies can help identify explosibility and chemical reaction hazards so that appropriate testing, simulations, or calculations are identified to support safe scale up
DIERS Methodology
Design emergency pressure relief systems to mitigate the consequences of unwanted chemical reactivity and account for two-phase flow using the right tools and methods
Deflagrations (Dust/Vapor/Gas)

Properly size pressure relief vents to protect your processes from dust, vapor, and gas explosions

Effluent Handling

Pressure relief sizing is just the first step and it is critical to safely handle the effluent discharge from an overpressure event

FATE™ & Facility Modeling

FATE (Facility Flow, Aerosol, Thermal, and Explosion) is a flexible, fast-running code developed and maintained by Fauske and Associates under an ASME NQA-1 compliant QA program.

Mechanical, Piping, and Electrical
Engineering and testing to support safe plant operations and develop solutions to problems in heat transfer, fluid, flow, and electric power systems
Hydrogen Safety
Testing and consulting on the explosion risks associated with devices and processes which use or produce hydrogen
Thermal Hydraulics
Testing and analysis to ensure that critical equipment will operate under adverse environmental conditions
Nuclear Safety
Our Nuclear Services Group is recognized for comprehensive evaluations to help commercial nuclear power plants operate efficiently and stay compliant
Radioactive Waste
Safety analysis to underpin decomissioning process at facilities which have produced or used radioactive nuclear materials
Adiabatic Safety Calorimeters (ARSST and VSP2)

Low thermal inertial adiabatic calorimeters specially designed to provide directly scalable data that are critical to safe process design

Other Lab Equipment and Parts for the DSC/ARC/ARSST/VSP2 Calorimeters

Products and equipment for the process safety or process development laboratory


Software for emergency relief system design to ensure safe processing of reactive chemicals, including consideration of two-phase flow and runaway chemical reactions


Facility modeling software mechanistically tracks transport of heat, gasses, vapors, and aerosols for safety analysis of multi-room facilities


Our highly experienced team keeps you up-to-date on the latest process safety developments.

Process Safety Newsletter

Stay informed with our quarterly Process Safety Newsletters sharing topical articles and practical advice.


With over 40 years of industry expertise, we have a wealth of process safety knowledge to share.

Recent Posts

Thermal Hazards Reaction and Adiabatic Calorimetry Testing

Posted by Fauske & Associates on 10.15.18
Thermal stability and chemical test

Engineer running a test on the
Mettler Toledo RC1 reaction calorimeter

Thermal stability (or thermal hazards) testing collects reaction rate data and applys that data to assess whether a specified quantity of material can be used in a way such that runaway reactions are avoided. This is important when considering processing, long-term storage, or shipping of a material. A comprehensive lab uses many tools to understand and eliminate undesired reactions, accommodate process upset scenarios and design a client’s desired process chemistry.

Do you recognize the importance of these in your thermal stability testing?

  • Safe Scale-up
  • Reaction Rates
  • Heat of Reaction
  • Heat of Mixing
  • Heat of Dissolution
  • Adiabatic Temperature Rise
  • Heat Capacity of Reaction Mass
  • Heat Flow and Adiabatic Calorimetry
  • Low-phi Factor (directly scalable) adiabatic calorimetry
  • UN Transport Testing
  • Practical Emergency
  • Vent Sizing (PrEVentTM)
  • Software
ChemiSens reaction caliometry
ChemiSens CPA202

Reaction calorimetry testing and consulting services are designed to help you better understand your desired process chemistry. One of the keys to safely scaling up a chemical process is managing the energy or heat flux that the intended chemical reaction produces, especially when that chemical transformation is exothermic in nature. When considering process scale-up whether the heat is removed via a jacket, a condenser, or a side loop heat exchanger in the plant reactor, or partially allowed to heat up the mass, it is imperative to balance the cooling capacity at scale versus the projected heat flux rate and understand the total energy available due to the desired reaction should that cooling fail. The accepted technique for gathering this type of data in the industry is known as reaction calorimetry.

There have been many instruments developed over the years to accomplish this task and Fauske & Associates, LLC (FAI) maintains a variety of devices so that we can design the most appropriate experiment to gather the vital heat rate and adiabatic potential data needed for a safe scale up. Couple this with our vast experience in characterizing runaway reaction behavior using adiabatic and vent sizing calorimetry and we can deliver you a complete picture of a safe chemical process.

We currently utilize three Reaction Calorimeters of varying size and capability:

THT-μ RC - The reactor is simply a GC vial or a metal pressure (SS or HC) cell, volume ~1.5 ml. Modes of operation include isothermal with steps, titration with an integrated syringe pump, scan and hold (2˚C/min max) and heat capacity determination. FAI is also developing this device for measuring binary compatibilities.

Mettler-Toledo RC1 - The RC1 is a heat flow calorimeter. As such, the heat leaving or entering the reactor is characterized by UA (Tr-Tj), where U is the overall heat transfer coefficient, A is the area of heat transfer and Tr and Tj are the temperature of the reactor and jacket, respectively.

ChemiSens - The ChemiSens is a heat flux calorimeter that provides a true heat flow signal without requiring any calibration. The heat transfer surface is entirely through the bottom of the reactor making use of Peltier technology, and is independent of the heat transfer coefficient as defined above.

Thermal stability test
Testing in the Thermal Activity Monitor (TAM®)

Adiabatic calorimetry testing provides data for relief system design, safe scale-up of chemical processes, and changes to process recipes.  Safe process design requires knowledge of chemical reaction rates, character and energy release - all of which can be obtained from a low phi-factor adiabatic calorimeter such as the VSP2TM (Vent Sizing Package 2) or ARSSTTM (Advanced Reactive System Screening Tool).To determine critical safety parameters to avoid undesired reactions, FAI performs heat flow and adiabatic calorimetry using VSP2TM, ARSSTTM, Thermal Activity Monitor (TAM), Seteram C80, Accelerating Rate Calorimeter (ARC®), Differential Scanning Calorimeter (DSC), Thermal Gravimetric Analysis (TGA), AKTS Software used to determine:

  • Onset Temperature
  • Time to Maximum Rate (TMR)
  • 24 Hour Adiabatic Decomposition Temperature (ADT24)
  • Temperature to Avoid Thermal Runaway - Critical Temperature of a Vessel
  • Self-Accelerating Decomposition Temperature (SADT)

Low-phi factor (directly scalable) adiabatic calorimetry using the VSP2TM & ARSSTTM provides information to understand and accommodate process upset scenarios. These tests determine:

  • Adiabatic Temperature Rise Rates
  • Adiabatic Pressure Rise Rates
  • Pressure-Temperature Profile
  • Design Vessel Relief Systems

If you enjoyed learning about adiabatic calorimetry, check out our case study on low thermal inertia adiabatic calorimetry.  In this case study, FAI performs tests to determine what is the self accelerating decomposition temperature of a 50 kg package of azodicarbonamide. Download the case study now to to learn more about AKTS software, self accelerating decomposition temperature, the United States SADT test, and much more.

Download Now

Topics: Thermal Stability, Reaction Calorimetry, Adiabatic Calorimetry


Is My Dust Combustible?

A Flowchart To Help You Decide
Download Now